System



B. s. AIKMAN. PUMP AND PUMPING SYSTEM. I APPLlC ATION FILED SEPT. H5, 1915. 1 42 3 291 Patented July 18, 1922.

3'SHEETS-SHEET I.

B. S. AIKMAN.

PUMP AND PUMPING SYSTEM.

APPLICATION FILED SEPT. 15, I915.

Patented July 18, 1922.

4 Inve mic? ,Bu/rlan/ d ffjlfmw B. S. AIKMAN.

PUMP AND PUMPING SYSTEM.

APPLICATION FILED SEPT. 16, 1915.

,vided a single water UNITED STATES PATENT ()FFICE.

BURTON S. AIKMAN, OF lt-CILEVAUKEE, WISQiJNSIN, ASfiIGIlGZ-R- TO NA'EIGNAL BRAKE 1&2

ELECTRIC COMPANY, OF 'MILVE AUKEE, VIISCGNSIN, A CORPORATION OF WISCONSIN.

PUMP AND PUIVIPING Specification of Letters Patent.

Patented July 18, 19226 Application filed September 16, 1915. Serial No. 56,941.

To all 107M772, it may concern:

Be it known that l, Bun'ron' S. AIKMAN, a citizen of the Ullltccl States, residing at lvlilwaulree, in the county of lililwaulzee and State ot llisconsin, have invented a certain new tlCl sei'ul improvement in Pumps and Pumping Systems, of which the following is a lull, clear, concise, and exact descriptic-n, reference being had to the accompanying drawings, forming part of this specilication.

lliy invention relates to pumps and pump ing systems and contemplates an improved a paratus which may be employed as an isolated plant for furnishing water to a residence or an industrial establislnncnt il 'lOill a nearby source, such as a well.

It is the purpose of my invention to provide an in'iprorcd system which supplies water fresh from the well, that is without the intervention ot a storage or reserve tank, and which will be under "itaijicet ci'nitrolf by \Vlllcl) ll mean that the how of water is controlled by the acts of opening and closing the faucets which form the supply outlets of the system.

To supply water iiresh from the well and to maintain the how of water under itaucet control is, broadly speaking, matter of prior art. The apparatus and systems heretofore known and used were, however, subject to inherent diliiculties due to the fact that their mode of operation required coinpl iities such alternately operating cha1nhers, *alres operated by marginal diil'erences in pressure or by time element devices, and

to the that the pneumatic control einplqv'ed led to frequent iuisoper-ations such as are commonly called blow-overs where th T8111 becomes cleared 01" water and the conniiressed air, en'iployed as an operating medium, is wasted.

Acct Qing to in invention there is prochanibcr alternately subject to air pressure and relieved therefrom, the alternations being secured by the a tuations of valve mechanism which, in turn, are directly and mechanically dependit upon the ris and tall oil. the water in the So for l 9.111 aware, l are the V e a faucet controlled water in dispensing upon a single cylinder pinup or supply It will be the rise and tall ol? the water in the chamber is comparatively gradual.

My invention is illustrated in the acconipanying drawings in wnich Figure l is a more or less diagrammatic view illustrating the system as a whole; Figure is a plan view of the pump; i igure 3 is a vertical axial sectional View taken on the plane ot the line 3, 3, 0t 2 and looking in the direction indicated by the arrows;

on the plane ol the line i, a, of l ig. looking in the direction indicated by rows; is a vertical axial partial secview ton on the plane of the line 5, o, of llig. a: looking in the direction i'utli su 'uil by the arrows;

' s a partial sectional View, simi- 1 tion oi l ig. 3, but drawn on a larg r scale, and

i ip orc i is an isolated View taken on the line Y. T, of Fig. and looking on indicated by the arrows.

t to Fly 1, which, as betore .an'zn'iatic, will be seen that u. 11;; or casing is illu trated at 8, vol being indicated at 9. The :iu-ture, which I have indicated y the l ereuce character 10, is diswell at a suitable distance be or level therei Wlll. be dotherelroni three pipes, an air pressure pipe an eiha'ust pipe 153, and a water -dispipe 1 3. The air pressure pipe 11 h a compressed air tank 14 in union air is -:torn ;-?essed by means of a iompressor l5, operated, for instance, by on lectric ino'tor iii. ll; wil be clear to those :xcilled n the art tl'iat the compressor 15 any he operated by any suitable means such lhe pinup structure has leading vided.

The water discharge pipe 13 leads to various branch pipes 17 and 18, each of which, in turn, leads to an outlet faucet 19. By means of a pipe 20, the discharge pipe 13 is connected with a chamber 21, closed eX- cept for the entry pipe 20, for a purpose which will be pointed out presently.

It will now be understood that this system represents an isolated plant for installation in a residence, for instance. The water discharge pipe leads from the well, conveniently near by, to the distribution pipe in the building, and the compressor, motor, compressed air tank and chamber are suitably housed in any convenient way.

As before pointed out, air-pressure is constantly maintained upon the system. It is therefore necessary to maintain a certain pressure between predetermined minimum and maximum limits in the compressed air tank .4, this being done by the proper startsay every two or three days, for a short time, in order to keep the pressure in the compressed air tank within the desired limits.

It will appear as this description proceeds that with the pressure properly maintained upon the system, everything is at rest so long as all the outlet faucets of the system are closed, but as soon as one of them is opened the pumping mechanism will operate to maintain continuous the flow which immediately commences. When the faucet is again closed the apparatus comes to rest and it will appear that the teed has been direct from the well with the proper pressureto distribute it to whatever point-s desired.

' 1 refer now to Figs. 2 to 7, inclusive, to describe the pumping mechanism. A head member and a primary base member 23, both of circular form, are joined by a cylindrical housing 24 which forms a water chamber 25. As illustrated in Fig. l, the head member 22, and the primary base member 23 are tied together by means oi two pipes 26, 26, which thread into the head member 22 and pass through openings in the primary base member 23, the lower ends oi these pipes being screw-threaded for the reception of nuts 27, 27 which, when tightened, clamp the housing 2 1 firmly in place to form a water-tight and air-tight compartment. Secured to the under side of the primary base member 23, by means of screws 28, 28, is the secondary base member 29 which has extending downwardly therefrom a central boss 30 to which a foot 31 is screwthreaded, a conical screen being clamped between the foot 31 and the boss 30, and thus held against the under side of the secondary base member 29. The secondary base member 29 is provided with two water inlet openings 33, 33, each of which is controlled by a valve 34: hinged, by means of a link 35, at 36 to a standard 37 extending upwardly from the base. I

The primary base member 23 is provided with an axial opening 38 in which the lower end of a vertically reciprocating cylinder 39 is slidably mounted. The lower end of this cylinder is open, as shown, and openings L0, 40, are provided in the side walls thereof. It will be seen that the cylinder 39 is so constructed that a shoulder t1 is formed therein, below the openings 40, 40, and this shoulder forms a valve seat to be engaged by the ball float valve which is confined within the cylinder in Pig. 3, the top of the cylinder 39 is closed. This need be so only so tar as the proper retention of the ball float valve 42 is concerned. This reciprocating cylinder 39 forms a hollow piston working in the short cylinder bearing 38 and constitutes a motor memher for actuating the admission and exhaust valves.

Extending upwardly from the top 43 of the cylinder 39 is a stem at which extends upwardly to a point near the head member As shown, the stem 4st terminates at its upper end in a spider which comprises the radial members 45, 4.5, and, the annulus -16.

The head member 22 is provided with the atmosphere passageway 47, the compressed air inlet passageways a8 and 4L9, the primary water chambers 50 and the secondary water chamber 51. These passageways and chambers are isolated from each other, as will be described. the atmosplu-n'e passageway beng connected with the pipe 12, the compressed air inlet passageway 18 being connected with the pipe 11., and the secondary water chamber 51 being connected with the discharge pipe 13.

Referring new first to the atmosphere passageway a? it will be seen that it is so "fashioned as to lead to the axial opening 52 in the bottom of the head 22, valve seat '53 surrounding this opening. The lift valve 54 As shown tion movement of the stem 44 after the member 45 is moved away from the under side of valve and before the shoult or 57 comes in contact with the valve face. The extension 56 is provided with shoulder 57, which after certain movement oi motor piston 3, engages the face of the exhaust valve 55, so that further movement or motor piston 39 and stem 44 breaks the exhaust valve loose from its seat against the pressure within the chamber. The extension 56 is also provided with enlargement 58 which rides in the sleeve 59, set axially in the head 22 and disposed concentrically in the opening 52. A helical spring ('30 is confined in the sleeve 59 between the enlargement 58 and the taco oi the valve for the purpose oil? imparting a quick movement to the valve after it has been broken loose "from the seat by the shoulder 57. This quick movement is imparted to valve 54 by spring 60 tor the purpose of securing a wide opening of the valve 54 quickly so that there will be no obstruction to the out-rush of pressure fluid from the cylinder, and so that the flow of air outwardly will not be able to draw the valve 54 back upon its seat.

The two compressed air inlet passageways 48 and 49 are connected by a port 61 which has a valve seat 62 surrounding the upper end thereof, this valve seat co-operatingwith a valve 63, having a compressible face 64. The valve 63 is carried upon a sup 'ilementa. stem 65 which. in turn, engages in a central pocket 66 in the upper end of the extension The lower end of the supplementary stem 65 is adapted to be engaged by the bottom of the pocket 66, as shown in 2-3, and also. in Fig. 6, and a spring 67 is provided to maintain the lower end of the supplementary stein out of such engagement. The valve is set in a pocket 68 axially in the top of the head this pocket being closed by a plug 69. The valve 63 is provided witl peripheral grooves 70 in order to balance the pressure on opposite sides ol? the valve when it is in open position, it being understood that the con'ipressed air comes in through the passageway 48.

ring Tl is secured to the outside of the cvlinder 39 and this lin torus a shoulder between which and the ring 72 on the primary base member the helical spring 73 is di oosed, this s n53; thus having'a tend ency to move the \1 vlinder therewith upwardly.

1 L and the parts so as to cut off communication between the water chamber 25 and the atmosphere, until valve is opened and pressure admitted to the chamber 25, after which the difference in pressure between the pump chamber and the outside thereof holds valve 54 tightly against the seat as it is not necessary that spring 73 be strong enough to do more than close valve 54 and open valve 68. The ditlerence of pressure between the chamber and the outside thereof holds valve 54 to the seat 53 until valve 54 is engaged by the shoulder on the extension of the stem 44 during the downward movement of stem 44. By the same action the valve will be lifted from its seat 62, due to the engagement of the bottom of the supplementary stem 65 with the bottom of the pocket 66, and, once litted from its seat, the valve 63 balanced and will then naturally rise further under the influence oil the spring 67. In this condition the apparatus affords a tree passage tor the compressed air through the passageways 48, 61 and 49 so that the compressed air is exerted on the surface of the water contained in the chamber as vill hereinafter more :lully be pointed out.

The water which is in the chamber 25 is forced out oil that chamber under the influence of: the compressed air, through the openings 40, 40 in the cylinder 39 and downwardly out oi? the bottom of the cylinder into the compartment between the primary base member 2-?- aud the secimdary base member The lower ends of the pipes 26, i l communicate with this compartment by means of the openings 74, 7 4, in the nuts 537, 27, he interior of these nuts co1nmunieating directly with the interiors of the pipes 26, 26.

the water is thus gradually forced out 0! the chamber 25 the ball float valve 42 will gradually drop with the level of the water urtil that valve upon the valve seat 41.. it will be obvious, then, since the cylinder 39 is capable oi downward movement. and since the tloat valve 42 has now closed the bottom thereof, that the continued application of the conipr ssed air will result in downward movement oi the cylinder 39 and the parts connected therewith. in order to facilitate this downward movement, l: provide means whereby the pressure below the movable cylinder 39 may be relea ed. This means is in the form of a valve which controls the water outlet passageway 76. This valve 75 is normally held closed by a spring '77 mounted upon a stud 78 in the toot 31, this entire arrangement being disposed in the pocket '79 :tormed centrally in the boss 30. The pocket has the vent 8i and it will now be een that il the valve is moved cownwardly it will permit the exit of water cm the compartment below the movable cylinde: 39, by way of the passageway 76,

pocket79, and vent 80. The lower end 01' the cylinder 39 carries a spider 81 which forms a butter 82 disposed in axial align- "from inspection oil? Figures 3 and 1.

The opening in the motor piston 110 is closed by the valve 42 while the line oi? the water still above the seat all. This secures a water seal of all the joints and valves of the motor so that no air is driven over into the water pipes even though leakage past the piston or valve may occur during the pressure stroke of the motor. in the same manner the motor is submerged during the eXhaL st stroke oi. the same. The exhaust stroke of the motor is made as will. be explained later, when the pump cylinder 25 is filled with water and when the heat 93 releases the detent or trigger 86. This relation permits the cylinder to be filled with maximum speed and without waste oi water from the operation of the motor.

The water seal, which is always maintainer between. the motor and the air in the pump ing chamberis particularly important in a faucet controlled system because such a sys tem is under constant pressure and subject to leakage and moreover the ttaucets may be suddenly or gradually opened or closed at any stage of the operation oi? the pump or of the parts of the pump.

In the downward movement of the cvlinder 39 the rod 141- removes the spider and annulus 46 from the back oi the valve oand begins to compress the spring 60 against the face of the valve 5 1, which is being held against the seat 53 by the diiliereuce oi pres-- sure within the prunp clunuberand tliieoutside thereoi. Further movement oi? the rod 4 1 permits valve 63 to seat, thus the supply which is covered by the screen 32, is con siderably below the level of the water in the well and there will therefore be this head of water tending to open the valves 3 it being assumed that whatever passes inwardly through the vent 80 is ne ligible. Since there is merely atmospheric essurc within the chamber 2,5, the opening of the valves 3%, 3 1, will admit water from the well into the chamber above them, by way oi the openings 33, 33, and the ball float valve will be lifted from its seat so as to admit water into the water chamber 25, the float valve rising as the water rises.

lit is no" pertinent to consider another acwhich takes place. Secured to the uniile oi the head 22 is a bracket frame 181 which has the downward extensions 182, 1.82, and Mounted upon shaft 84: which turns in the downward extensions 182, 182, as best illustrated. in Figures 3 and 7, is an arm 85 to which a trigger 86 is pivoted at 37, the trigger being otherwise supported by means of a swinging fork 88 pivoted at 89 to the extension 83. Also mounted upon the shaft 8-11 is an arm 90 which, as illustrated in 7, extends around the spider to the other side of the Kill of the chamber. The arm 90 swings with the arm 85 and in order to secure this operation it is convenient to secure both arms to the shaft 8 1, the axis of which is the pivotal axis. Hung from the free end "1' arm 90., at pivot 91 is a rod 92 to which ioat 93 is secured, this float depending in 1 'l'loat JOIC 91 carried near the upper end of he chan'ibi-ir 25 upon. the pipes 26, 26, by ueans oi a bracket 95. At the bottom of his float box anoutlet 96 is provided and his outlet is controlled by a. flap valve 97 pivoted at 98 in the bracket 95, an arm 99 iuvingirur with the valve in the nature of a ell-crank lever, and being adapted to be em aged by a collar 100 on the stem 1 1, as will hereiiuii'tor be pointed out. A. spring 07 tends to hold the valve closed.

around the aiiinulus 16 of the spider which is: pritivided at the top of the stem 1 1 bearuppermost position,-as illustrated in ure 3, the end of the trigger 86 bears :u amst the outside 01 the ring 101 below the shoulder 102, the weight of the float 93 tendiup; to hold it in this position, it being assums-d as will. hereinafter be pointed out, that under these :ircuinstances there. is no water in the float box 91- to hold the float in uppermost position When'the stem 44 is brougight into its lowermost; position, however, the trigger, due to the weight of the lioat 93, is moved toward the center of the spider and conseipiently catches over the shoulder 102, thus latching the stem 14 and the pa rte-1: connected therewith in their lowermost position. lVhen unlatching takes place the stern "1d: movesupwardly and amongthe other operations which. have been described the collar 100 engages the arm 99 to open the valve 97, thus permitting; the exitof water from the float box 94: by way. oi the opening r 7 During the expulsion of the water from the cl'uunber 25 the flow is secured out of the chamber at the bottom and upwardly through the pipes 26. 26, into the primary water chambers 50. The pressure forces the water past the check valves 103, 103, by way chamber 10. 3 are open.

of the opening 104-, 104-, into the secondary water chamber 51 from which tl e discharge pipe lcz ds. Th check valves 103, 103 are each held seated by means of the spring 105, held under a plug cap 106 screwed into the top of the head member 22.

Although in this description the isolated operation of the various parts has been re ferred to to facilitate a clear understanding of the structure, I shall now give a brief, but connected description of the complete operation. Let is be assumed, by reference to Fig. 3, that the apparatus is now in such condi tion that water is being forced from the As, indicated, the chamber has been partly'emptied and the stem H is in its uppermost position. In this condition the chamber 25 is closed off from the atmosphere, since the valve 54 is closed, and compressed air finds its way down through the passageway 48, port 61 and passageway 49, since the valve 63 is'open. Under these con ditions the trigger rests upon the ring 101 below the shoulder 102, the valve 97 is open, the valves 3 1, 3 1 are closed and the valves It will be seen that the water which has collected in the chamber 25 will therefore be forced downwardly, through the openings 40 to the interior of the cyllnder 39, down through the cylinder, out; the

bottom thereof, through the ports 74:, 74:, up

wardly through the pipes 26, 26, into the primary water chambers 50, 50, through the openings 104:, 10 i, into the secondary water chamber 51, and out through the discharge pipe 13 to the distribution pipes 17 and 18 and faucets 19. Under these circumstances, reference to Figure .1 will show that water will also be forcedinto the air chamber 21, confining an air cushion above the waler level formed therein, as indicated in dotted lines. As the level of the water in the chamber 25 is lowered, it runs out of the Host box 9% by way of the passageway 96, and the ball valve 42 is maintained in its uppermost position within thecylinder 39 until the water level comes down far enough, after which the float valve will gradually drop with the water. The apparatus is now feeding the system under the pressure of the compressed air tan: 1%, it being assumed that one or more of the faucets 19 are open. all the outlets of the distribution system are closed, everything will be at rest since, although there is pressure on the top of the water in the chamber 25, there is no outlet for the water. Let is be assumed now that the withdrawal, of water from the system continued. The water in the chamber 25 continues to drop, the float valve 42 going down with the water until it reaches the seat n. This, as before described, closes off the outlet from the chamber25 and the feed of water ceases. The opening in the hollow motor member 39 1S closed by the valve 42 dicated by the dot-and-dash line.

as the water level descends, while the motor member is completely submerged. Thus a water seal is maintained between the air in the chamber 25 and the motor to prevent leakage at the valve seat a1 and the bearing 38. However, since the pressure is continned, and since the cylinder 39 and the parts connected therewith are capable of downward movement, the continued pres sure moves the cylinder 39, and its associated parts, downwardly. The valve 75 is promptly opened to relieve the pressure below the cylinder 39 and to permit the continued movement of the cylinder. Since the weight of the float 93 tendsto move the trigger 86 toward the center of the spider, it will be clear that when the downward movement of the cylinder 39, stem 44, and the associated parts, has taken place to a sufficient extent. the trigger will pass over the shoulder 102 to hold the movable structure in its lowermost position. This downward movement is performed quickly and during the movement the compressed air is first cut off by the closure of the valve 63 and the atmosphere passage is opened by the opening of the valve 54:. hen the air in the cylinder 25 is released by opening of the exhaust valve 54, the motor is still submerged in the water trapped in the bottom of the cham ber 25 so that a water seal is maintained at all times between the air in the chamber and the motor. Also, during this movement, the arm 99 is released from the collar 100 to permit the valve 97 to close. As before pointed out, an immediate inrush of water from the well follows. The valves 34-, 34:, open to permit this entry of water and the float valve i2 is lifted off .its seat and permits the passage of the water into the chamber 25. Since the valve 97 is closed, the water cannot enter the float box from below, but must rise to the level of the top of the float box, as in- Once up tothis level, the water SLHlClBDly pours into the float box 94 and the float 98 rises to withdraw the trigger 96 from contact with the shoulder 102, whereupon under the influence of the spring 73 the entire movable structure, comprising the cylinder 89, stem &4, and associated parts, starts upwardly, executing the exhaust stroke of the motor. During this stroke of the motor water seal is maintained between the air at atmospheric pressure in the cylinder 25 and the motor. This upward movement causes the spider to engage the underside of the valve 5 1, closing that valve, and also causes the bottom of the pocket 66 to engage the bottom of the supplementary stem to raise the valve 63 from its sea-t. Thus, the atmosphere is shut off and the compressed air is again admitted I pump with a. faucet opeinthc an portunlty to expand and, in doing so forces: 7

to the upper level p in order that the her 21.

ter rises the valve 97 is closed and in the operation where the water held open as described,

The speed with. which the chainl'ier 2;)5 [ills course de ms upon the sizes oi?- the inlet passaqeways and the head of thewater in the we i havemade experiments whichshmv that with a structure built substantially along; the lines of that. illustrated in the drawinggzs, and substantially of these proportions suliimerged about ten. feet elz the level oi the water in the well, a period oi? about. 1.5 seconds is required for the filling operation. it the capacity oi: the dlicliarg e cl distribution pipes is greatenough, this nomentary cessa tion of pressure will be ha...

falls the valve i m'ucets to be h of time, 0011-. me. However, up inthe flow maybe properly filled in, I provic :he air chamber.

open for a considerable len sumes practically all tlu 121 to which the pipe 20 .oielrvers from. the discharge pipe a when. the water in the d'. barge pi, A

as it is practically all oi": .theiiiine, a certain amount of water isYitorced up into t is chain- This action compresses the air in the chamber and forms a cushion which. is

maintained: so long); as the pressure is not relieved. As soon as the pressure isreliiwed, however, by the cessation oil; pressu 1n the given op.-

out the water which has 11-.come packed therein and provides a flow ii in the durlng the refilling period the pump.

Thisc-hamber 21 wi l, oi cou sx, be distin; guished from a stora c tank, since all t does is to increase the capacity of the em and.

provides ineans'iij'or certain amount of com riod, about lbj'secondr small consignme from the .I imperceptible to the opcnin pression to be released r, very short petimc. lit will be a understoodsthat this ater chamber 21 is directlyqa partof the dis charge system being); located in effect directly between the well andthe faucet, and the In th s way, a con inue as (low we is insured. Thave'found by experiment thatthe air in the chamber 21 is in; chan ged.

this latter action being; instantaneous and 01' the faucet.

this refill- As before pointed out, dur

ing operation, the cylinder 39 (if thepump structure andthe parts associated therewith are in their-lowermost position, being held by thevtrigger SG, I When the level of the water reaches the top of the box 94:, the

v yiperceptihle at the faucets, part cularly since the expulsion period, assuming one or moi 1? is under pressure,

her rep icet which is in the is constantly be water flows suddenly into the bozii, raises the float 93, releases the trigger 86, and permits the movable structure to move to its upward position to reverse the valve to close oil the atmosphere and admit the compressed air, whereupon the cycle of" operations which have been described will be repeat-ed. The

the low level. condition in the pum p through the agency oi the float valve 4-2. It is controlled. by the high level condition of the water in the pump by means of the float 9 3 and the connected tri ger mechan1sm 86. 1 j Having" thus described the normal operation of the pump, I will describe the co ndition under which. many failures have occurred when air displacement pumps are controlled by the laucet with the air pressure on the pump at all times. In supplying water for domestic service therea-rc long intervals during" which no water'at all is used. The most frequent of these is the period over night, and in many instances during this pe riod, a very n'lllll'lte quantity of water is usedon account of slight leaks 1n the plumbing" fixtures or because some faucet is not closed 7 absolutely tight. l. his causes water in pump chamber to move down very slowly, and

it willbeseen that there must be a quick" positive QXllfil. t and. refilling of the chamless of the length oi time requir for the water in the chamber to reach the tripping; point, atwhich the valve mechanism operates. in invinventioii this is provided tor by the ion motion connection re- "terre-d to between rod 41 i and the valve" 5 i, and the lost mot connection between the bracket lranie 81 and the valve 75. For it.

will; beseen that no matter how slowly valve 42 applies"movement mthe pressure motor ill), there will be no opening of the valve 54k until the movement has been great enough to. bring the shoulder 57 the face of valve before which bracket frame 81 comes in conflictwith the valve and opens it. This peri'nits exit of the water from, the compartment below the movablecylinder 39 to pass-into the well from the passage 7 6, pocket 79 andvent 80. By this venting of passageway T6 quick movement of the pre sure motor 110 is obtained insuringaposltiveand quick opening of valve 54, so that a quick reversal of the operating valves is obtained, which'insurcsa prompt refilling oi the pump chamber regardless of the speed at. which liquid is discharged from the chamber. i

It will be seen that the upper and lower levels of the water in the chamber 25 positively determine the reversal of the valves. The atmosphere condition is maintaineduntil the upper level reaches the top of the float box and the compressed air condition into contact with is maintained until the level has dropped to the point of seating the float valve 42. In this way the reversal of the valves Inechanicallv dependent upon the conditions which require their reversal and there is thus secured a positive and reliable operation not subject to the delfects pointed out in the early part o:l:' this description.

It will, be seen that the reversal of the valves is sudden, has been described, and that the arrangement such that at no time is there even an effective connection between the winpressed air and the atmosphere. l find that this is esseiliial tor con'm'iercial operation of th pump and to the end oil curing these results the lost motion counection between the rod 4&- and the valve 5% is essential in the construction which I have illustrated.- It Will be clear that suction instead of full atmosphere may be applied to the pipe Without departing from the spirit and scope of my invention.

I have endeavored to embody the tleatures of my invention in a simple structure involving a minimum number of parts o'tsimple design, and some of the more limited oil the appended claims are directed to these more specific features.

I claim:

- 1. In a pump,the combination oila single chamber having inletand outlet valves for the admission and expulsion of liquid, tWO ports one {or exhaust and one liroi'n a source of motive 'llui'd, a 'mechanically connected valve structure to alternately closing one ol. said ports and opening the other, means moved by pressure oi the motive fluid for opening the exhaust port and closing the compressed air port, and valve means lying; Within the chamber and controlled by the rise of liquid in said chamber for controlling the pressure operated means for closing the exhaust port and opening the port for motive fluid.

2. In a pump, ie combination ol a chainher having inlet and outlet valves for the admission and expulsion. of liquid, t'xvo ports,- one for exhaust nd one ifrom' a source compressed air, valve structure for alternately closing one of said ports and opening the other, means moved by air pressure for opening' the exhaust port and closing: the compressed air port, and resilient means for closing the aust port and opening the compressed air port.

iBpIn a pumrnthe combination i her having inlet and outlet valves forthe admission and expulsion of liquid, tivo ports, one for exhaust and one from a source or compressed air, a valve structure tl or alter; nately closing one ot said ports and openii the other, means'moved by air pressure for ojenino' the exhaust oil and closin the l' 23 c:

compressed air port, and resilient means for closing the exhaust port and opening the mum leve l.

compressed air port, both of said means hedirectl v controlled by the level of the liquid in said r'rlnunber.

"l. la a pump. the combination cl a chaml'cr having inlet and outlet valves for the admission. and expulsion oi liquid, an atmosphere port and a compressed air port, a valve for alternately closing one or" said ports and opening the other, a movable member connected with said valve, said member tending to nmve to one ol positions said memlicr heinod to its opposite position by compressor air, a latch for holding said member in said latlcr position, and float memnrnism for releasing said latch 5. In a pump, the combination of a cham her hat 3.1g inlet and outlet valves for the r lmission and expulsion oi? liquid, an atvalve for alternately closin one of said ports and opening the other, a movable member conne d with said valve, said member tending to move to one of its positions, said n'aeinlier being moved to its opposite position by compresseifl air a valve which when the liquid has reached its minimum level halts the compulsion from said chai'nbcr, the compressed air thereafter being exerted to more said movable member, a latch for holding; said member in said latter position, and

fioatmeehanism tor releasing said latch.

ii. in a pinup, the combination of a chama; inlet and outlet valves tor the Z sio'i and expulsion ol liquid, an atmos- Jrc po and a cmnpressed air port, a lfor alternately closing one o'li said rip-curing the othuz. a movable icnrlint-j to move to (me er its posi- ,1 V

' being moved to its oppo compressed air a latch for rid l-i i osition l said latch,

nmximum pliere port, aval e of said ports and a movable member coin rec member tending; to to one or its posh tions, saio member bong moved to its opposite pm' on by compressed air, a valve which ivhenthe liquid has reached i mini= e expulsion from said ressed air thereafter besaid movable member, n member said latiechanism for releasat mechanism operatthe liquid enters When uni level has been reached.

sphere port and a compressed air port, a

' or connected with said valve, said n a box v v. 'i v c F wan c, said tending to move to one oitits positions, saidmember being moved to its opposite position bycompressed air, a valve which when theiliquid has reached its minimum level halts the expulsion. from said ehal'nber, the compressed air therea'litcr being exerted. to move saidmovable member, a latch r015 holding said member insaid latter position, and float mechanism for releasing said latch, said float mechanism operating in. a box which the liquid enters when the maximum level has been reached, said box being permitted to empty with the fall .01. the liquid in the chamber;

9. In a pump, the combination of aliquid chamber, a discharge chamber normally connected therewith, said discharge chamber having inlet and outlet check valves, an exhaust port and an air pressure port for said chamber, a valve,'1novable means for operating said valve, a spring tending to hold said means in position to'close the exhaustportandopen the ,pressure port, said means being moved to its reverse posi tion. by air pressure but the air pressure I being inelfective thereon while the conned tion between said chambers is ,open, means .for closing said connection, a latch for holding the movable means in its reverse position, and float mechanism for releasing said latch. V v

10. In alpump, the combination of a liquid chambena discharge chamber normally con-- neetedltherewith, said. discharge chamber having inlet and outlet check valves, an

exhaust port and an air pressure port for saidchamber, 'a valve, movable means for 'operatlng said valve, a spring tending to hold said means in position to close the exhaust'port and open the pressure port, said means being moved to its reverse position by air pressure but'the a11-pressurebeing in effective thereon while the connection being the movable means in its reverse posi tion and float mechanism for releasing said latch.

- 11. In, a pump, the combination of a liquid chamber, a discharge chamber normally connected therewith, said discharge chamber having inlet and outlet check valves, an exhaust port and an air pressure port for said chamber, a valve, movable means for operating said valve, a spring tendlng to hold said means in position to close the exhaust port and open the pressure port, said means being moved to its reverse nosition by air pressure but the air pressure being lIIPfl QCluVQ thereon while the connection between said chambers is open,means for closing said, connection, a latch for holding the movable means in its reverse position,

and float mechanism for releasing said latch,

said float mechanism operating in a box located. within and. near the top of said cham-v her, said box receiving the liquid from the top thereof and being provided with a check valve to permit the exit ol the water near the bottom thereof.

l2. In a pump, the combination of a liquid chamber, a discharge chamber normally con-- nected therewith, said discharge chamber tion, a latch for holding themovable means in its reverse position, and float mechanism for releasing said latch.

13. In a pump,the combinationof a liquid '90 bers is open, means for closing said connec- V chamber, a discharge chamber normally connected therewith, said discharge chamber having inlet and outlet check valves, an eX-V.

haust port and an air pressure port it'orfsa id chamber, a valve for each port, movable means lor simultaneoulsy operating said valves, the valves being approximately balanced when unseated, a spring tending to hold said means in position to close the ex haust port and open the pressure port, said Q means being moved to its reverse position by air pressure butthe air pressure being lIlQfitBCtlVB.thGIGOILWhllG the connection between said chambers is open, means for clos ing said connection, a latch for holding the movable means in its reverse position, and

float mechanisnrfor releasingsaid latch.

" 14. In a pump, the combination'of a'liqQ uid chamber, a discharge'chamber normally connected therewith, said discharge chant her having inlet and outlet check valves, an exhaust port and an air pressure port for said chamber, a valve, movable means for operatingsaid valve, a spring tendingto hold said means in position to first close the exhaust port and then open the pressure port, said means being moved to 1ts reverse position by air pressure but the ainpres sure belng lneflectlve thereon while the connection between said chamber'is open, means forclosing said connection, a latch for hold-l ing the movable me anslinv its reverse position, and float mechanism for releasing said latch. a

15. In a pump, the combination of a liquid and float mechanism for releasing said chamber, a discharge chamber normally connected therewith, said discharge chamber having inlet and outlet check valves, an e:- haustport and an air pressure port for said liquid chamber, a valve. movable means for operating said valve, a spring tending to hold said meansin position to close the 6X- haust port and open the pressure port, said means beingmoved to reverse position by air pressure but the pressure against the pressure in t schai chamber being ineffective on said means while the connection between said chambers is open, means for closing said connection, a latch for bolding the movable means in its reverse its air latch.

16. In a pump, the combination or a liquid. chamber, a discharge chamber normally con-- nected therewith, said discharge chamber having inlet and outlet check valves, an ex haust port and an air pressure port for said chamber, a valve,movable means for oper ating said valve, a spring tending to hold said means in position to close the exahust port and open the pressure port, said means being moved to its reverse position by air pressure but the airpressure against the pressure in'said discharge chamber being ineffective thereon while the connection between said chambers is open. means for closing said conncction,.means for relieving the pressure in said discharge chamber. a latch forholding the movable means in its reverse position, and float mechanism {or releasing said latch.

17. In a pump, the combination of a head and a base, a cylinder between them, pipes tying said head and base together, exhaust and pressure ports in said. head, a val e mechanism for controlling said ports, a liquid inlet valve in said. base, and a liquid outlet valve in said head, the liquid in the chamber formed by said cylinder being discharged through said base, through said pipes and past said outlet valves in said head.

18. In pump, the combination of ahead and a base, a cylinder between them, pipes tying said head and base together, and pressure ports in said he; l, a controlling said ports, liquid inlet valves in said base, liquid outlet valves in s id head, the liquid in the chamber formed by id cylinder being discharged through said base,

through said pipes and past said outlet.

valves in said head, float mechanism controlling the movement of said first named valve, and a float box in which said mechanism operates'supported within said cylinder upon said pipes.

1i9.- In a pump, a chamber having inlet and outlet valves for the inlet and expulsion of liquid, two ports, one for exhaust, and one for the admission of motive fluid, a motor for controlling both of the motive fluid ports, said motor having a piston moved by pressure oil the motive fluid for opening the exhaust port and closing the admission port, and means disposed Within the chamber and "controlled by the rise of liquid in said cham her for closing the exhaust port and opening the admission port.

20. In a pump, the combination of a water chamber and a discharge chamber separated by a partition, inlet and outlet valves for said discharge chamber, air inlet and outlet valves for said water chamber, a cylinder through which water may pass mounted for vertical movement in said partition, a valve I seat in said cylinder, 21 float valve confined in said cylinder, means connecting said cyl inder and said air valves and a spring tending to move said cylinder in one direction, the cylinder being moved in the pposite direction by air pressure.

21. In a pump, the combination of a water chamber and adischarge chamber separated to move said cylinder in one direction, the

cylinder being moved in the opposite direc tion by va rpressure, and a vent valve for said discharge chamber opened by the latter movement of said cylinder.

22. In pump. a chamber having inlet and outlet valves for the inlet and expulsion of liquid, two ports, one for exhaust, and one for the admission of motive fluid, valves for said ports, a motor for operating both of said valves, said. motor having a piston moved by pressure of the motive fluid for changing the condition in said chamber from a pressure condition to an exhaust condition, and means disposed Within the chamber and controlled. by the rise of liquid in said chamber and controlling. the motor for changing the condition in said chamber from an exhaust condition to a pressure condition.

23. In a pump, a chamber having inlet and outlet valves for the inlet andv expulsion of liquid, tvvo ports, one for exhaust, and one for the admission ofmotive fluid, a valve structure for alternately closing one of said and opening; the en port and opening the ad chamber having inlet and outlet valves for the admission and expulsion of liquid, an atmosphere port and compressed air port, a valve for alternately closing one oi? said ports and O ening the other, a movable mem- .ber connected with said valve, said member tending to move to one of its positions, said member being moved toiits opposite position by coi'npressed an", a latch tor holding said member in said latter position, float mechanism for releasing said latch, a discharge pipe leading from said liquid outlet valves, and ilaucet in said discharge pipe.

- 26. In combin ation, a pump barrel, liquid inlet and outlet ports, an exhaust port, an admission port for motive "luid, mechanically connected valve means tor alternately closing; one of the air ports and. opening the other, means controlled by emptying of the barrel and actuated by pressure of the motive fluid for closing the admission port 7 must port, and means disposed within the barrel and controlled by I filling; of the barrel for closing; the exhaust mission. port.

2?. In apump, the co mission valve for nnaive fluid and an; exhaust valve. a lost motion conngetion be tween said valves, a pressure motr operated by the pressure oil? the motive fluid for operatinpi sai'd valves, and level controlled devices for governing said pressure motor.

28. in a pump, the combination of admission ano exhaust ports having; valves, a pressure motor for alternately opening one high and clcsine' the other of said. valv he exhaust port an open the port, and a low level lloat C(lilillgtlllln motor to close the admission port and thereafter open. the eXha .st port.

29. In, a pump. the combination of ad mission and exhaust valves, a pressure operated motor for alternately openim; one and closing the other valve, :1 water box having; inlet the top and outlet at the bottom and level controlled device in said box for con trolling said pressure motor.

30. 1n a pump, a pumping chamber, the combination of admission and exhaust valve 7 means, a pressure motor operated by the pressure of the motive fluid tor opcrating natioi'z, at an adsaid valve m ans, float means governed by high water level and by low water level in the pinup loicontrolling the operation of the motor to operate said valve means to exhaust the pressure in the pump in respouse to low watercoi'uflitions and to admit pres ure in response to high Water conditio in the pump, said float means having passageways, and means-wholly enclosed within the chambcii and" governed by the liquid level in the chamber controlling the operation of said pressure motor.

In a pump. the combination of a barre]. a head meiuliicr for the barrel having an inlet passageway, an exhaust passageway, an intermediate passageu' ay with the barrel oi? the piunp. a substantially axial opening conncctiim said passageways, a valve li)ett\veen the inlet and interi'nediate passageways, a valve between the exhaust and intermediate passageways,and means connecting}: said valves.

32-3. ln-a pump, the combination of a barrel. a head llIQJHlJPV'fOI the barrel having an inlet passzuzeway, an exhaust assan eway.

an intermediate passageway communicating' i the bane] of thepump. a substantially optuinp; connecting said passageways, ndve l c een the inlet and intermediate ewa vsl a valve between the exhaust inliermeiliate passageways, and means an d connecting said valves, and level controlled means governing; the actuation of said connecting: means.

34:. In combination, a pump barrel having a head member an admission passageway, an erihaus passagzevmy, and an intermediate passagmvay between them, a transverse open- [112 no -.ctin;) all of said passageways, an a valve tor closing oil' the admission assagre'waysan exhaust valve for c. osthe exhaust pass: gg'eway, and an opting stem haviinz a lost motion connection I "h each oi said valves, said stem projectthrough said transverse opening.

In a pumpthe comhinationot a barliaviiiig a bead member, an. admission pa ewav. an exhaust passageway, and an n nediate iiassageway between them, a tr v 1: opening connecting all of said passageways, aii'aclinission valve for closmg oil' the admission passageway, an exhaust valve for closing off the exhaust passageway, a motor device for operating said valves, said motor device having lost motion connection with each of said valves.

communicatlng 1,&23,291

36. In a pump the combine. ion of a barrel, head member ving admission exh a an sagewayi an exhaust the exhaust passes valve having a stem proi through st valve adapted to engage th ail lll of the adin' valve.

37. in a pump the combina on of rel, a head. member for the b:. l.,

and exhaust member having admission sageways, and an intermediate pal between them transverse ope ecting said passageways an admission closing off the admission passageway an ex;- haust valve for closing; ofl the exhaust has sageway, an operating stein having lost iuot-ion connection with the valves and an annm lar sleeve about said sienn said sleeve being: seated in wall of the exhaust pas form a double annular seat tor the e. valve.

38. In combination, a pump barrel a head 1'- ember tor the barrel, said head member having formed therein an admission pas sageway, an exhaust passageway and an intermediate passageway lying'betiveen said passageways and communicating with the pump barrel, admission valve for controlling connection between the admis sion passageway and said intermediate passageway, and an, exhaust valve for controlling the connection oi? the exhaust passage way with the pump barrel, and spring means for holding the exhaust valve closed and the admission valve open.

39. in eonibinatioin a pump barrei, a head member for the barreh said head member Comprising; an. admission passageway, an OK- haust passageway and an intermediate new sageway lying between said pass and communicating; the pUIl1p b2LI16l an admission valve for control ing the eonneo tion between lie admission p ssaeeway and said intermediate 1 issageway,

an exhaust valve for controlling" the connection between said exha t passageway and said pump b for holding toe exhaust valve closed 1 tne admission valve open and motor rhea -s controlled by the level of lio id in the pump for overcoming said means,

l-0. In a pump the combination of a barrel head member ha ing admission and ei haost passagewaysand an intermediate passageway between hem said intermediate passageway communicating with the barrel of the pump, a transverse opening connecting; all oi said passageways, admis sion and exhaust valves to? closing oil the admission passageway from said intermeb arrel,

diaie isssageway ant i said exhaust passageoni said PULP b arieh respectively, ,7 V,. valves having; connecting nieans lying in in sverse opening, head member ha water 3:.

a isageways substantially its sides 0 he transverse passagevalves in head t r said u the combination of a eyhead niei'nber having ad- .iust passagemiys and an iageway between them hill the inteii'ior of the bar- "a sverse opening connecting admission and e i g off the admission intermediate passage passageway from the ing connecting means sverse opening, a foot water passageways in upon opposite sides of "svei'se open ng and tie pipes read and the toot n'ieinl er oomith said wzfer passageways pressui'e operated elevalves, level. eonthe application of fluid chamber on ment to? t-i'ol means pressure to the remote I main I the eombi V ll be .el, osin the lower end. of said o1, member having means for fitting; and ex misting niopass in said head connect I between the 1 serving; means e bottom of the the head and foot member i d for opening the exhaust port and elosinn: the admission. port and resilient means -.*erning5 admission of the motive fluid.

45.111 a pump, the combination of a chamber havn. inlet and outlet valves for liquid, two poi one for exhaust and one for admission oi": the motive fluid, a valve structure for alternately closing one of said valves for liquid, two ports, one for ex haust and one for the admission of: motive fluid, mechanically connected valve means for both of said ports, motor means controlled by the fall of the level 01 the liquid and moved by pressure of the motive fluid for changing the condition in said chamber from a pressure condition to an exhaust condition, said means comprising a floating ball valve.

47. In a pump, the combination of a chamber having inlet and outlet valves for liquid, two ports, one for exhaust and one for the admission of motive fluid, mechanically connected valve means for both of said ports, motor means controlled by :tall of the level of the liquid and moved by pressure of the motive fluid for changing the condition in said chamber from a pressure condition to an exhaust condition, said means comprising a float valve disposed within the chamber, and means controlled by the rise of liquid in said chamber for changing the condition in said chamber from an exdescribed, the combination of exhaust and admission ports for motive fluid, main valves for said ports, a float valve disposed within the cylinder, a pressure motor operated by the motive fluid and controlled by the float valve for operation of one of said main valves, the exhaust of the motor being controlled by the main exhaust valve.

49. In a pump, the combination of asingle pumping chamber, a main admission valve for admittting motive fluid, a main exhaust valve, a pressure motor operated by pre sure of the motive fluid for operating said valves, and valve means disposed within the chamber and controlled by the level. of the liquid in the pumping chamber for govcrning said pressure" motor.

50.- In a pump, the combination of a single pumping chamber, a main admission valve for motive fluid, a main exhaust valve, a

' pressure motor operated by the pressure of motive fluid for operating said main valves, a valve port for the pressure motor disposed within the said chamber, and a level controlled device governing the valve port to control the application of pressure to said motor.

51 In a pump, the combination of a pumping chamber, admission and exhaust valves, a pressure operated motor controlling the alternate opening of one and closing of the other valve, and a level. controlled device having all of its connected parts disposed within said chamber controlled by high level of liquid in the pump governing said pressure motor.

52. In a pump, the combination of a single working cylinder, admission and exhaust valves, a pressure operated motor or opening the exhaust valves and closing the inlet valve, level controlled means governing the closing oi the exhaust valve and opening of the inlet valve, and a level controlled device having all its operating parts disposed within the chamber governing the application of pressure to the motor.

55. In a pump, the combination of a barrel, a head member forthe barrel having an admission passageway, an exhaust passageway, an intermediate passageway communicating with the barrel of the pump, said intermediate and said admission passageways being adapted to communicate with each other, a valve between the admission. and intermediate passageways, a valve for the exhaust passageway, and pressure operated nmtor means within the barrel. controlling the operation of said valves.

54-. In a pump, the combination of a barrel, a head member for the barrel having an admission passageway, an exhaust pas eageway, and an intermediate passageway, said intermediate passageway leading to the barrel and adapted to communicate with the IlflllllfvSlUIl passageway, an admission valve between the admission and intermediate passageways, an exhaust valve betweenthe pump barrel and the exhaust passageway, a valve stem connecting said valves and proectino' through all three of said assa e- .l 3 c. D

ways, and a pressure motor within the barrel connected. to said stem and controlling the operation of said valves.

In a pump, the combination of abarrel having a head member, an admission passageway, an exhaust passageway, and an intermediate passageway between them, an admission. valve for closing oil the admission passageway, an exhaust valve for closingofi the exhaust passageway, and a motor device for operating said valves, said motor device having lost motion connection with the exhaust valve.

56. A pump comprising the combination of a chamber having inlet and discharge means, admission and exhaust valves, a plurality of level controlled devices having their 7 connected operating parts disposed Within the chamber, a motor for opening the ex haust valve and closing the admisslon valve, one of said level controlled devices being responsive to control application of pressure to the motor at low level, and another of said level controlled devices governing closing oi the exhaust valve and opening of the admission valve.

57. A pump comprising the combination of a chamber having inlet and discharge means, an admission valve for admitting motive fluid, and an exhaust valve, said admission and exhaust valves being mechanically interconnected by a movable connection, a pair of level controlled devices enclosed in said chamber, a motor for operat ing the valve structure to open the exhaust valve and close the admission valve, one of said level controlled devices being responsive to lOW level to control application of pressure to the motor, and the other of said devices governing said valve structure to close the exhaust valve and open the admission valve.

58. In a pump, the combination oil? single liquid chamber having liquid inlet and outlet means, admission and exhaust valves, a pressure motor for operating the said valves, a valve port tor the pressure motor and a float governing said pressure motor valve port, said port and lioat being disposed within the said chamber.

59. In a pump, the combination of a single liquid chamber having liquid inlet and out-- let means, admission and exhaust valves, a pressure motor for operating the said valves, motor valve port governing the application of pressure to the pressure motor and level controlled means governing the motor valve port, said port and level controlled means being disposed within the said Cl1t111- ber.

60. In pump, the combination of a pumping chamber, admission. and exhaust ports, having: valves, a pressure motor for operating said valves, a high level float for controlling); the closing of the exhaust valve and opening; of the admission valve, and a 10W level float controlling; the motor to open the e: ;haust port and close the admission port, said floats operating through means disposed Wholly Within the chamber.

61. In a pump, the combination of a Water chamber and a discharge chamber sepa rated by a partition, inlet and outlet valves for said discharge chamber, air inlet and outlet valves for said water chamber, a cylinder through which water may pass, mounted for vertical movement in said part on, a valve seat in saidcylinder, a 'tloat valve confined in said cylinder, means con nected to said cylinder adapted to the outlet valve for the Water chamber, the cylinder being moved in one direction by air pressure, a spring tending to move said cyl inder in the opposite direction, and a vent valve for said discharge chamber, opened by move nent of said cylinder.

62. In a pump, the combination of single pumping chamber having; inlet and outlet valves to: the inlet and expulsion of liquid, t (0 ports, one :ter exhaust and one a :ource ot' niotive fluid, facing lift alves connected. together and adapted to alternat ly close and open to admit and exhaust motive tiuid to and "from the c aniber, a pressure motor actuated by the motive iiuid governiup the opening o the exhaust valve and the closing the a "mission valve.

in pini'ip, the con'ibination ot a pump having valves for admission and eX- pulsion of liquid, a single Water chamber and dischar e chamber separated by a partition, inlet and outlet valves tor said Water chamber, a cylinder through which Water may mounted for vertical .i'novement with. respect to said partition, a valve seat in said cylinder, a tloat valve for said seat confined in said cylinder, said cylinder having means gov rning the opening oi the exhaust valve and closing of the air inlet valve.

(ll. lin a pump, the combination of a chamher having inlet and discharge means, ad inis on and exhaust valve means, pressure niot for operating said valve means, said motor b on; actuated at the time that the chamber is to be exhausted by a fluid pres-- sure on one stroke and having means for storing energy on the outward stroke for making the return stroke.

65. in pun p, the combination of a chamber having inlet and dischare'e means for lirpiid, hnission and exhaust valves for motive fluid, a pressure motor for operating said valves, said motor being actuated by pressure of the motive fluid to actuate the va a es, andto store ene gy its own retun stroke, and level controlled means with in the pump governing; the application o't 'iressure to said motor.

(36. in a pumo, the c'inlnnation of chamber having inlet and discharge means for liquid, ission and exhaust valves or motive fluid, apressure motor for operau said motor being act ated by motive tliiiid.

the time that a chamber is to be exhausted, to open the l ust valve and close the admission valve, 1 1 means compresseril by the outward trolze of the motor for making the return nose of the nnitor and level controlled means governing the closing of tie exhaust valve and opening of the lmission valve.

in pump, the c bination oil a sciharrz e means ves for I, l i

' a jJIGSSUrG motor our! motor co .ing; s... the t1? a be exhausted by pres to open the exhaust mlve mission valve and spring by the outward stroke of the motor for mak- I opening of the admission valve, said level controlled means transmitting motion to means disposed wholly within the casing.

69. In a pump, the combination of a pumping chamber, main inlet and discharge valves for liquid, main admission and ex haust valves for motive fluid, a pressure motor controlling said admission and exhaust valves, and a floating valve governing the application of pressure to the motor,said floating valve being controlled by low level conditions in the liquid chamber.

70. In a pump, a single working chamber having main inlet and discharge valves for liquid, main admission and exhaust valves for motive fluid, a pressure motor for operat ing said admission and exhaust valves, said motor having a port therethrough for discharging liquid from the working chamber to the main discharge valve, and a floating valve governed by low level conditions in the working chamber controlling the application of pressure to the pressure motor.

71. In a device of the class described, the combination of a single pumping chamber, inlet and discharge valves for liquid, admission and exhaust ports for admitting and exhausting motive fluid, valve means controlling said ports, a pressure motor device adapted to be operated by pressure of the motive fluid, said pressure motor comprising cage, a floating ball valve in said cage an outlet for liquid through said cage controlled by the floating ball valve and means governing the opening of the main exhaust valve operated by said motor.

72. In a pump, the combination of a single working cylinder, admission and exhaust valve means for motive fluid, a motor device governing said valve means, said m0- tor device comprising a movable member having an outlet for the discharge of liquid from the working cylinder, and a floating ball valve adapted to obstruct the discharge outlet. and cause movement of the motor device to cause exhaust of the motive fluid.

'1" In a pump, the combination of a chamber having inlet and discharge valves for liquid, admission and exhaust valves for motive fluid, a pressure motor for control.- ling the operation of the valves, said motor being adapted to have communication with the liquid in the pumping chamber, a low level valve controlling the application of pressure to the motor, said pressure being transmitted to a portion of the liquid and a relief port for accelerating the motor on one stroke, and spring means operating on the motor tending to open the admission valve and close the exhaust valve.

74. In a pump, the combination .Of a pumping chamber having inlet and discharge valves for liquid, admission and exhaust valves tor motive fluid, a pressure motor operated by the pressure of the motive fluid for controlling the operation of the admission and exhaust valves, said motor being adapted to have communication with the liquid in the pumping chamber, a loW level valve for controlling the application oil? pressure to the motor and means whereby a portion of the discharging liquid is discharged into the well for the purpose of preventing a slow movement of said motor and spring means operating on the motor and tending to open the admission valve and close the exhaust valve.

'75. In a pump, the combinationlof a pumping chamber having inlet and discharge valves for liquid, admission and exhaust valves for motive fluid, a pressure motor for controlling the operation of the admission and exhaust valves, said pump being organized to have a lost motion connection between the motor and the exhaust valve, a level controlled valve controlling application of pressure of the motive fluid to the pressure motor, means for discharging a portion of the liquid from the pump to accelerate the stroke of the motor, and spring means operating on the motor and tending to open the admission valve and close the exhaust valve.

76. In a pump, the combination of a pumping chamber having inlet and discharge valves for liquid, admission and exhaust valves tor motive fluid, a pressure motor for controlling the operation oi? the admission and exhaust valves, a lowlevel controlled valve for controlling the application oi pressure to the motor while a body of liquid in the pump is in communication with the discharge pipe, and means for permitting the escape oi a portion of said liquid externally oi: the discharge port, and. spring means operating on the motor and tending to open the admission valve and close the exhaust valve.

77. In pump, the combination of a pumping chamber having in et and discharge check valves, admission and exhaust ports for motive fluid, a motor for controlling' said admission and exhaust valves, a low level controlled valve for controlling the application of pressure to the motor while a body of liquid remains between the pump chamber and the discharge check valve, means for permitting a portion of said body of liquid to escape when the Water in the chamber has reached a predetermined level, and spring means for opposing one stroke of the motor.

78. In a pump, the combination oi inlet and discharge valves for liquid, admission and exhaust valves for motive tiuid, a pressure operated motor for operating said admission and exhaust valves, a. controlled. valve controlling application of pressure to the motor, means for permitting pressure to escape from the motor and a spring compressed on one stroke of the motor.

79. in a pump, the combination of a single pumping chamber having inlet and di charge valves for the liquid, admission and exhaust ports for motive fluid, valve 1rechanism governing said ports, a pressure operated motor operated by pressure of the motive fluid transmitted through a portion ol the liquid, said valve mechanism being operated by said motor on one s volts and means energized by the one stroke of the motor for making the return stroke of the same.

80. in a pump, the combination ot a single pumping chamber having inlet and discharge valves for liquid, adn'iission and ex haust ports for the admission and exhaust of motive fluid to and from the pumping chamber, a motor operated by pr ssure oi' the motive fluid in the pumping chamber, said pressure being transmitted through a portion of the liquid, valve mechanism for governing the admission and exhaust ports, said valve mechanism being operated by said motor on one stroke of the motor, and means energized by the one stroke of the motor for making the return stroke of the same.

81, In a pump, the combination oi a single pumping chamber having inlet and discharge valves for liquid, admission anc er;- haust port means for motive fluid, a pres 'e motor operated on one stroke by pres 'e of the motive fluid tram tted i ough a portion of the liquid each stroke, valve means operated by said pressure motor govof the motive liuid for making the return stroke oi the motor.

a pump, the combiir g chamber, inlet for liquid, a

motive tlu exh st valves, a float valve governing the soonestion of: pressure to the motor, said l I) being controlled by lOW level conditions n the liquid clnunher and means for d1sch-arg-- ing a portion oi the liquid from the said low level float valve being carried ooivn below the point of initial application of pressure to the motor when said motor starts to move.

in combination, a single pumping cylinder, a head member, a foot member at tachcd to said cylinder, a movable piston in said c inder, an admission and an exhaust valve in 5 1e head of the cylinder and a relief valve in the loot member, said valve being operated by lllOVBD'lQIllJ of the piston.

in combination, a pump cylinder, a head member, a foot member attached to said pump cylinder, motor means having a movable piston in said cylinder, an admission and an exhaust valve in the head of the cylinder, relief valve in the foot member, connecting means for connecting said piston With all oi? said valves, said connection means: having lost motion therein.

85. in a pump, the combination of a single pumping chamber having inlet and discharge valves for liuuid, admission and exhaust valves for fluid pressure, a pressure motor for controlling the operation of said lilwl'Ol for controlling the operation of said admission and exhaust valves, said pressure motor ha. a motor chamber, a relief port 7 oior chamber, and a float valve disposed within the pumping chamber governthe application of pressure to said presmotor, said float valve being controlled b lO'W level conditions in the liquid chambei re iluiu inlet, a nd a liquid outlet, the cylinder, a piston ve seataal: against the licuid outletivhen the Wered a predetermined the pressu e fluid outlet,

pasuth and a cylinder, a piston working in said cylinder, a valve cooperable with said piston tor closing the liquid outlet when the liquid level lowers a predetermined amount in said chamber, a valve for closing the pressure fluid outlet, means operated by the piston for unseal'ing the second mentioned valve when the piston is moved by pressure fluid in said chamber, a. relief passage having one end extending awry hem and clmn'nunicating with said cylinder and its other end lead ing to the exterior of the pump, and a valve lor normally closing the lirst-nientioned end of said relief passage and moved to open position away from said passe when said piston is moved.

89. A pump embodying a chamber lniving a liquid inlet, a pressure rluid inlet and out-- let, a member having a liquid outlet and a cylinder eommunicating therewith, a. piston working in said cylindm, a valve cooper-able with said piston to close the liquid outlet when the liquid level lowers a predetermined amount, a valve for closing the pressure fluid outlet, means lor unseating the second mentioned valve wien the piston is moved, said member having a reliel passage having one end extending away vein and Colilflllll'll cating with tl e cylinder and its other end leading to the exterior of the pump, and a valve disposed below the piston for runnially closing the firstmentioned end of said passage and moved to open position when said piston is moved by the pressure lluid in the chamber.

90. A pump embodying a chamber having a liquid inlet, a pressure fluid inlet and outlet, a member having a liquid outlet and a cylinder communicating tl'ierewith, a. piston working in said cylinder, a valve coo iierable with said piston to close the liquid. outlet when the liquid level lowers a predetermined amount, a valve tor closing the pressure l'luid outlet, means for unseating the second mentioned valve when the piston is moved, said member having boss, and a relie'l passage extending to the taco oil? the boss and c0 u,- municating with the exterior of he pump, a cup engaged upon said boss, a stem disposed in linewith the piston and pro} eeting through said opening, and a valve carried by said ntem seatable against said boss to close said opening and passage.

91. vThe combination in a 1;)nenmatie pump, a cylinuer, a depending nipple therein providing an air outlet l r the cylinder ,pring pressed member movable within the cylinder and having a valve at one end scatahle against the nipple to norm: ly close the pas sage therethrough, a piston attached to said member and movable wi \in the cylinder, the piston having an opening, and a lmoyant valve guided by said member and seatable over the opening of the piston.

92. The combination in a pneumatic pump,

a vertical cylinder having an air outlet passage, a sleeve movable vertically within the cylinder and hi vin openings for the passage oi water theretnrough, a piston secured to the lower end of the sleeve and working within the cylinder, the piston having an opening, a buoyant valve mounted within the sleeve and seatable over said opening of the piston, a valve carried by the upper end 0 i the sleeve and arranged to close said passage, and means for yieldingly raising the sleeve.

93. The combination in a pneumatic pump, a cylinder, an air outlet passage, a pis-itou working within the cylinder and having an opening, a guide carried by the piston, a buoyantvalve guided by said guide and seatable over the opening of the piston, a valve carried, by the guide for closing the air outlet passage, and means for yieldingly moving the guide to seat the last mentioned valve.

94;. The combination in a pneumatic pump, a cylinder having an air outlet pas sage, a piston. movable within the cylinder amt having an opening, buoyant valve seat-able over said opening, a second valve crninected to the piston to be moved therewith and operable for closing said passage, and means for yieldably moving the piston to cause the last mentioned valve to normally close said passage.

J53. A pump embodying a chamber having a check valved liquid inlet, a pressure fluid inlet, a pressure fluid outlet and a liquid.

outlet, means operable for automatically closing the pressure fluid outlet when the liquid level to a predetermined point in said chamber and adapted to be held in closed position by pressure fluid, and means operable for moving said means to open position out of range of the pressure fluid flowing through the pressure fluid outlet when the liquid has been forced from said chamber through the liquid outlet.

96. A. pump embodying a chamber having a check-valved liquid inlet, a pressure fluid inlet and a 1' ."essure fluid. outlet, a valve for closing the pressure fluid outlet, yielding means having a. liquid out-let and adapted to unseat said valve, and means for closing said liquid outlet when the liquid has been forced from the chamber theretlnrough.

97. A pump embodying a chamber having a checlcalved liquid inlet, a pressure fluid inlet, a liquid outlet and a pressure fluid outlet, means for closing the pressure fluid' outlet, a movable member having a valve seat through which the liquid flows to the liquid outlet, a buoyant valve seatable upon said seatwhen the liquid has been forced 'l'rom the chamber through the liquid outlet,

said member being actuated by the pressure :l'luid when said valve is seated, and said member having means for moving the atore said means to open position when said member is moved by the pressure fluid.

98. A pump embodying a chamber having a check-valved liquid inlet, a pressure fluid inlet, a liquid outlet and a pressure fluid outlet, a valve for closing the pressure fluid outlet, a pressure fluid operated member having a valve seat through which the liquid flows when forced from the chamber through the liquid outlet, a buoyant valve seatable upon said seat, and means carried by said member for unseating the first-mentioned valve when said member is moved by the pressure fluid.

99. A pump embodying a chamber having a check valved liquid inlet, a pressure fluid inlet, a liquid outlet and a pressure fluid outlet, means for closing the pressure fluid Outlet, a'member having a cylindrical opening communicating with the liquid outlet and from which the liquid flows to said outlet, a housing having a piston working in said member having a cylindrical opening, valve seats, a valve seatable upwardly against one of said seats, a buoyant valve within the housing seatable downwardly against the other of said seats, said housing when moved by the pressure fluid serving to move the aforesaid means to open. position.

100. A pump embodying a chamber having a check-valved liquid inlet, a pressure fluid inlet, a liquid outlet and a pressure fluid outlet, a member having a cylindrical opening communicating with the liquid outlet and from which the liquid flows to said outlet, a housing having a pistonworking in said member having a cylindrical opening, valve seats, a valve seatable upwardly against one of said seats, a buoyant valve within the housing seatable downwardly upon the other of said seats, and a valve for closing the pressure fluid outlet and unseated when the housing is moved by the pressure fluid.

101. A pump embodying a chamber having checlevalved liquid inlet, a pressure fluid inlet, a liquid outlet and a pressure fluid outlet, a valve for closing the pressure fluid outlet, and means for unseating said valve when the liquid has been forced from the chamber through the liquid outlet, the last mentioned means including spring means adapted to be brought under tension for unseating said valve by a quiclr movement to throw it from its seat.

102. A. pump embodying a chamber having a check-valved liquid inlet, a pressure fluid inlet, a liquid outlet and a pressure fluid outlet, means for closing the pressure fluid outlet, a member through which the liquid flows from the chamliier to the liquid outlet, a second member slidably engaging the aforesaid member and having a valve seat, a buoyant valve seatable upon said seat, the second mentioned member being moved by the pressure fluid when said valve is seated, and the second mentioned member having means, for movfinfg the {aforesaid means to open position when the second mentioned member is moved by the pressure fluid.

103. A pump embodying a chamber having a check-valved liquid inlet, a pressure fluid inlet. a liquid outlet and a pressure fluid outlet, a valve for closing the pressure fluid outlet, a member through which the liquid flows from the chamber to the liquid outlet, a second member slidably engaging the aforesaid member and having a valve seat, a buoyant valve seatable upon said seat, the second member being moved by the pressure fluid when the second mentioned valve is seated, and spring means movable with the second mentioned member and brought under tension to throw the first mentioned valve from its seat when the second mentioned member is operated by the pressure fluid.

104. A pump embodying a chamber having a check-valved liquid inlet, a pressure fluid inlet and a pressure fluid outlet, yieldable means having a liquid outlet, a valve for automatically closing the pressure fluid outlet when the liquid level rises to a predetermined point in said chamber and adapt ed to be held in closed position by pressure fluid, a valve for closing the liquid outlet when the liquid level is lowered to a point near the liquid outlet, andmeans operated by said yieldable means for moving the first mentioned valve to open position out OK range Of the pressure fluid flowing through the pressure fluid outlet when the second mentioned. valve closes the liquid outlet, said yieldable means being movable by pressure fluid when the liquid outlet is closed.

105. In a pneumatic pump, the combination with a pump chamber, provided with water inlet and outlet valves and an air exhaust port, of an air exhaust valve adapted to close the exhaust port when water has filled the pump chamber and adapted to be retained closed by the diflierence between the pressures in the pump chamber and outside thereof, a compressed air valve, a fluid actuated motor for opening the exhaust valve, and means for easing the motor to open the exhaust Valve when the water in the pump chamber has been lowered to a det rmined level.

106. In a pneumatic pump, the combina tion with a single pump chamber, provided with water inlet and outlet valves, of an air valve and a fluid motor for actuating said air valve, said motor being disposed within the lower part of the pump chamber below the low water level therein for pressure and exhaust so that a water seal will be maintained between the motor and the air in the pump chamber.

107. In combination, a pump cylinder 

